Fuel enrichment indicator
US7969291B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 5, 2008 |
| Grant date | Jun 28, 2011 |
| Priority date | — |
| Expiry date | Aug 13, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M15/104
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for signaling a driver of a motor vehicle that the motor vehicle is operating in a stoichiometric air/fuel mode or a non-stoichiometric air/fuel mode. The method includes providing an air/fuel sensor, the air/fuel sensor providing a signal that is representative of a stoichiometric air/fuel ratio mixture or a non-stoichiometric air/fuel ratio mixture being supplied to or burned by the motor vehicle. The method also includes providing a powertrain control module that is operable to receive the signal from the air/fuel sensor and to energize a light source when a non-stoichiometric air/fuel ratio mixture signal is received.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.